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NEET2020BotanyBiodiversity and its ConservationActual

According to Alexander von Humboldt:

Options

  1. ASpecies richness decreases with increasing area of exploration
  2. BSpecies richness increases with increasing area, but only up to limit
  3. CThere is no relationship between species richness and area explored.
  4. DSpecies richness goes on increasing with increasing area of exploration

Correct answer

B. Species richness increases with increasing area, but only up to limit

Step-by-step solution

German naturalist and geographer Alexander von Humboldt while exploring the South American jungles, found that within a region species richness increased with increasing explored area but only up to a limit. The relationship between species richness and area turned out to be a rectangular hyperbola for a wide variety of organisms. The relationship is a straight line on a logarithmic scale. S = CA Z Applying logarithm on both sides: logS   =   logC   +   ZlogA where, S = Species richness A = Area

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